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Tankless water heater repair pros in Annandale

Avatar for RightNOW Plumbing
RightNOW Plumbing
11047 Pierson Drive Suite G
4.74(
941
)
Approved Pro
RightNOW Plumbing
11047 Pierson Drive Suite G
4.74(
941
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
343 local quotes requested

At RightNOW Plumbing, we specialize in water heater repair & installation. We are Northern Virginia's premier water heater experts and the area's leading Tankless installer. We have established ourselves as the go to company for quality work and outstanding customer service. Whether it is a repair, installation or conversion to tankless, we will leave you with a smile when the job is done. We are ready to take on any water heater project and deliver results you will be proud of. We know that it takes more than just materials, tools, and skill to deliver outstanding results. That is why we are committed to unsurpassed customer service. We will not be satisfied until you are, that is our promise.

"RightNow Plumbing reliably provides competent, scrupulous, trustworthy service. Recently I engaged Andy to service our well-water acid neutralizer tank, because I questioned the reliability of service by another company 13 months earlier. Andy tested our water and found that its pH value was 6.97, which was consistent with previous readings over the past six months when he did other work for us. Because our well-water pH is essentially neutral, Andy explained the acid neutralizer tank is not necessary. He offered two options: 1) remove the tank (thus leaving us with only the water softener tank) or 2) empty it, which option I selected. He also reduced the cost of the service call. Andy’s approach starkly contrasts with the other company that for years took advantage of an unsuspecting customer by charging almost $300 to “service” the tank and unnecessarily adding expensive calcite. For competent, scrupulous, trustworthy service, call RightNow Plumbing. Posted May 14, 2025"

Paul C on May 2025

At RightNOW Plumbing, we specialize in water heater repair & installation. We are Northern Virginia's premier water heater experts and the area's leading Tankless installer. We have established ourselves as the go to company for quality work and outstanding customer service. Whether it is a repair, installation or conversion to tankless, we will leave you with a smile when the job is done. We are ready to take on any water heater project and deliver results you will be proud of. We know that it takes more than just materials, tools, and skill to deliver outstanding results. That is why we are committed to unsurpassed customer service. We will not be satisfied until you are, that is our promise.

"RightNow Plumbing reliably provides competent, scrupulous, trustworthy service. Recently I engaged Andy to service our well-water acid neutralizer tank, because I questioned the reliability of service by another company 13 months earlier. Andy tested our water and found that its pH value was 6.97, which was consistent with previous readings over the past six months when he did other work for us. Because our well-water pH is essentially neutral, Andy explained the acid neutralizer tank is not necessary. He offered two options: 1) remove the tank (thus leaving us with only the water softener tank) or 2) empty it, which option I selected. He also reduced the cost of the service call. Andy’s approach starkly contrasts with the other company that for years took advantage of an unsuspecting customer by charging almost $300 to “service” the tank and unnecessarily adding expensive calcite. For competent, scrupulous, trustworthy service, call RightNow Plumbing. Posted May 14, 2025"

Paul C on May 2025


Avatar for Family Fire Service and Plumbing LLC
Family Fire Service and Plumbing LLC
5006 Aspen Hill Rd
4.33(
6
)
Approved Pro
Family Fire Service and Plumbing LLC
5006 Aspen Hill Rd
4.33(
6
)
Approved Pro
Customers say: Quick response
25 local quotes requested
2 years of experience

We are in the industry providing plumbing and fire protection systems to residents and businesses in and around Maryland for over 22 years. During all this time we were working to improve customer satisfaction before, during and after the service based on our agile management, trained team and quality materials. Now, years of experience in the market allows us to guarantee that our work will be of the highest quality.

"Family Fire Service did a great job replacing my water heater! They were quick, attentive, and thorough. Excellent work! "

Hassan C on May 2025

We are in the industry providing plumbing and fire protection systems to residents and businesses in and around Maryland for over 22 years. During all this time we were working to improve customer satisfaction before, during and after the service based on our agile management, trained team and quality materials. Now, years of experience in the market allows us to guarantee that our work will be of the highest quality.

"Family Fire Service did a great job replacing my water heater! They were quick, attentive, and thorough. Excellent work! "

Hassan C on May 2025


Avatar for Tito Ramos Home Improvement
Tito Ramos Home Improvement
Sterling
4.95(
21
)
Approved Pro
Tito Ramos Home Improvement
Sterling
4.95(
21
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1929 local quotes requested

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"Excellent work. Great communication and timely response. Very knowledgeable. Would hire again without hesitation."

Yasmin L on January 2025

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"Excellent work. Great communication and timely response. Very knowledgeable. Would hire again without hesitation."

Yasmin L on January 2025


Avatar for Built Different
Built Different
8455 Tyco Road
5.00(
6
)
Approved Pro
Built Different
8455 Tyco Road
5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
40 local quotes requested

We specialize in all phases of remodeling for your home, bathrooms, kitchens, finishing basements, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call to schedule a free estimate today!

"We recently hired this company to remodel our kitchen and bathroom, update our living room flooring, and refinish our staircase. Overall, we’re very happy with the results! Kitchen and Bathroom Remodel: Both spaces turned out beautifully. The team helped us select materials that fit our style and budget. The kitchen feels more functional and modern, and the bathroom looks refreshed with the updated fixtures and tile. Living Room Flooring: The new floors look fantastic and completely change the feel of the space. The installation was clean and precise, and they made sure everything was done right. Stairs: The staircase update tied everything together nicely. They replaced the old steps and railing, giving the space a much-needed facelift. The team was professional, communicative, and stuck to the timeline and budget we agreed on. We appreciated their attention to detail and the effort they put into making sure we were satisfied with the work. If you’re looking for a reliable company for home renovations, I’d recommend giving them a call. They did a great job on our project!"

Lucky b on December 2024

We specialize in all phases of remodeling for your home, bathrooms, kitchens, finishing basements, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call to schedule a free estimate today!

"We recently hired this company to remodel our kitchen and bathroom, update our living room flooring, and refinish our staircase. Overall, we’re very happy with the results! Kitchen and Bathroom Remodel: Both spaces turned out beautifully. The team helped us select materials that fit our style and budget. The kitchen feels more functional and modern, and the bathroom looks refreshed with the updated fixtures and tile. Living Room Flooring: The new floors look fantastic and completely change the feel of the space. The installation was clean and precise, and they made sure everything was done right. Stairs: The staircase update tied everything together nicely. They replaced the old steps and railing, giving the space a much-needed facelift. The team was professional, communicative, and stuck to the timeline and budget we agreed on. We appreciated their attention to detail and the effort they put into making sure we were satisfied with the work. If you’re looking for a reliable company for home renovations, I’d recommend giving them a call. They did a great job on our project!"

Lucky b on December 2024


Avatar for Echs
Echs
5.00(
1
)
Approved Pro
Echs
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

Customer should go with me because of our attention to details as well as our passion to work and make sure the customers home is there dream home

"Did a great job fair price and were very flexible."

Joshua B on March 2025

Customer should go with me because of our attention to details as well as our passion to work and make sure the customers home is there dream home

"Did a great job fair price and were very flexible."

Joshua B on March 2025


Avatar for RC Home Renovation
RC Home Renovation
13621 Bethel Road
4.58(
19
)
Approved Pro
RC Home Renovation
13621 Bethel Road
4.58(
19
)
Approved Pro
Customers say: Quality work
547 local quotes requested
24 years of experience

LICENSED & INSURED 20+ YEARS EXPERIENCE PROUDLY SERVING VIRGINIA, MARYLAND, & THE DC METROPOLITAN AREA HOME REMODELING: ADDITIONS, MAJOR HOME REPAIRS, BATHROOM REMODELING, KITCHEN REMODELING, MAJOR RENOVATIONS- MULTIPLE ROOMS PAINTING: INTERIOR & EXTERIOR PAINTING AND MUCH MORE YOU NAME IT!!

"I contacted RC Home Renovations to repair the soffit on our front porch. Richard came out to review the work and provided me a quote via email which I agreed to and signed. I was told that the work would be completed on a Saturday (July 17th) which was 11 days away from the date of the signed contract. I received a text around 8am Saturday morning (THE MORNING OF!) stating that they couldn't locate the plywood for the soffit so they have to order it but its not coming in until the following week. I text Richard the following Wednesday asking for an update....no response. I followed up with another text the following Monday...no response. I never heard anything back so I hired someone else to complete the job which is being completed as I type this."

Gustavo B on July 2021

LICENSED & INSURED 20+ YEARS EXPERIENCE PROUDLY SERVING VIRGINIA, MARYLAND, & THE DC METROPOLITAN AREA HOME REMODELING: ADDITIONS, MAJOR HOME REPAIRS, BATHROOM REMODELING, KITCHEN REMODELING, MAJOR RENOVATIONS- MULTIPLE ROOMS PAINTING: INTERIOR & EXTERIOR PAINTING AND MUCH MORE YOU NAME IT!!

"I contacted RC Home Renovations to repair the soffit on our front porch. Richard came out to review the work and provided me a quote via email which I agreed to and signed. I was told that the work would be completed on a Saturday (July 17th) which was 11 days away from the date of the signed contract. I received a text around 8am Saturday morning (THE MORNING OF!) stating that they couldn't locate the plywood for the soffit so they have to order it but its not coming in until the following week. I text Richard the following Wednesday asking for an update....no response. I followed up with another text the following Monday...no response. I never heard anything back so I hired someone else to complete the job which is being completed as I type this."

Gustavo B on July 2021


Avatar for Millennium home renovations Inc
Millennium home renovations Inc
Based In
5.00(
5
)
Approved Pro
Millennium home renovations Inc
Based In
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
92 local quotes requested

With over 14 years of experience, we have the skills, knowledge, and expertise necessary to handle any commercial or residential project, no matter the size. Our expertise also includes electricity, plumbing, and carpentry. We provide the most affordable services to ensure that we can work within your budget to provide you with the highest quality remodeling and construction services. Our work is not complete until you are 100% satisfied. If you are not completely satisfied, we will continue to work at no additional cost to you. We will not collect the remaining balance due until you are completely satisfied. We will check all work, as well, to ensure that all of our quality standards have been met. We are committed to providing quality work that you will be satisfied with for years to come.

"We have worked with Millennium on several projects for our older home. Refinishing a basement that was flooded, replacing cabinetry that had water damage, tiling a large kitchen backsplash, replacing doors, bathroom fans, sinks and building an elevated deck in our backyard. The crew has always been timely, clean and efficient. Dan has always worked with me to make good choices on materials with careful considerations of cost and quality. Their work is great, prices are reasonable and they have been willing to tackle some complicated projects in a non-standard home. I highly recommend them."

Signy W on September 2023

With over 14 years of experience, we have the skills, knowledge, and expertise necessary to handle any commercial or residential project, no matter the size. Our expertise also includes electricity, plumbing, and carpentry. We provide the most affordable services to ensure that we can work within your budget to provide you with the highest quality remodeling and construction services. Our work is not complete until you are 100% satisfied. If you are not completely satisfied, we will continue to work at no additional cost to you. We will not collect the remaining balance due until you are completely satisfied. We will check all work, as well, to ensure that all of our quality standards have been met. We are committed to providing quality work that you will be satisfied with for years to come.

"We have worked with Millennium on several projects for our older home. Refinishing a basement that was flooded, replacing cabinetry that had water damage, tiling a large kitchen backsplash, replacing doors, bathroom fans, sinks and building an elevated deck in our backyard. The crew has always been timely, clean and efficient. Dan has always worked with me to make good choices on materials with careful considerations of cost and quality. Their work is great, prices are reasonable and they have been willing to tackle some complicated projects in a non-standard home. I highly recommend them."

Signy W on September 2023


Avatar for District Renovations LLC
District Renovations LLC
201 DAVIS DR STE N
5.00(
2
)
Approved Pro
District Renovations LLC
201 DAVIS DR STE N
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
227 local quotes requested

With experience since 2005, we specialize in Home Remodeling, Kitchen, Bathrooms, Floors, Decks, Painting and more. When you hire District Renovations you are not only getting the best quality of home renovations in the area, but the most trusted contracting company in Northern Virginia. Our brand is constantly innovating and improving to deliver the best quality jobs to meet your expectations and satisfaction.

"The project was professionally executed both on quality and on budget. Alex is a top notch contractor."

Alberto M on June 2024

With experience since 2005, we specialize in Home Remodeling, Kitchen, Bathrooms, Floors, Decks, Painting and more. When you hire District Renovations you are not only getting the best quality of home renovations in the area, but the most trusted contracting company in Northern Virginia. Our brand is constantly innovating and improving to deliver the best quality jobs to meet your expectations and satisfaction.

"The project was professionally executed both on quality and on budget. Alex is a top notch contractor."

Alberto M on June 2024


Avatar for Infinity Home Services
Infinity Home Services
Based In
5.00(
3
)
Approved Pro
Infinity Home Services
Based In
5.00(
3
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1 years of experience

We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"My pool was greenish and the chemicals were not balanced. I called IHS, they had everything crystal clear and balanced so quickly! After they got water sample they were able to solve the issues in one visit!"

Amy T on September 2024

We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"My pool was greenish and the chemicals were not balanced. I called IHS, they had everything crystal clear and balanced so quickly! After they got water sample they were able to solve the issues in one visit!"

Amy T on September 2024


Avatar for Douglas & Son Services
Douglas & Son Services
4.78(
18
)
Approved Pro
Douglas & Son Services
4.78(
18
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1689 local quotes requested

Douglas Plumbing, Heating & Air Conditioning, LLC, a Maryland limited liability company, trading as Douglas & Son Services (hereinafter referred to as “Douglas & Son Services”) specializes in, but is not limited to, providing residential and light commercial plumbing, gas, heating and air conditioning services in Washington, D.C., Maryland and Virginia

"They are very informed about systems throughout the house and are active educators for their clients for MAINTENANCE and saving money! The family owned business is impressive, as their son is ALREADY a JOURNEYMAN in both plumbing and I believe soon to be HVAC expert as well. They are serious about their knowledge and offerings. - Erin Fussell"

Erin L on January 2025

Douglas Plumbing, Heating & Air Conditioning, LLC, a Maryland limited liability company, trading as Douglas & Son Services (hereinafter referred to as “Douglas & Son Services”) specializes in, but is not limited to, providing residential and light commercial plumbing, gas, heating and air conditioning services in Washington, D.C., Maryland and Virginia

"They are very informed about systems throughout the house and are active educators for their clients for MAINTENANCE and saving money! The family owned business is impressive, as their son is ALREADY a JOURNEYMAN in both plumbing and I believe soon to be HVAC expert as well. They are serious about their knowledge and offerings. - Erin Fussell"

Erin L on January 2025

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Tankless water heater installations FAQs

Professional flushing services for tankless water heaters run about $200 per visit. This essential maintenance procedure eliminates mineral deposits from critical components, particularly the heat exchanger. While homeowners can purchase DIY flushing kits for $50 to $100, professional service offers the advantage of thorough cleaning with proper techniques. Professional maintenance also includes inspection of additional components that might need attention.

Industry experts and manufacturers recommend annual maintenance for tankless water heaters, with more frequent service (every six months) for homes with challenging water conditions. This regular attention prevents efficiency losses and extends the unit's operational lifespan. Watch for warning signs like reduced water temperature, inconsistent performance, or system error codes that might indicate maintenance is needed sooner than scheduled.

Neglecting regular maintenance allows mineral scale to accumulate within your system, restricting water flow and reducing heating efficiency. This forces your unit to work harder, consuming more energy while delivering less satisfactory performance. Over time, this strain can lead to component failures, inconsistent water temperatures, and premature system replacement. Additionally, most manufacturers require documentation of regular maintenance to honor warranty coverage for major components.

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